GENERAL VENTI NG I NFORMATI ON:
Canadian I nstallations
The venting system must be installed in accordance with the current CSA B149.1 installation code and/or
local codes having jurisdiction.
U.S.A. I nstallations
The venting system must be installed in accordance with the current National Fuel Gas Code, ANSI Z223.1/
NFPA 54, and/or local codes having jurisdiction. It is strongly recommended to install an approved chimney
Figure 46: B-Vent Setup
4" (10cm)
vent
6" (15cm)
optional
decorative
cover
Check vent draft
at the top row of
opening.
Figure 47: Draft test place.
liner in an existing brick chimney. This will maximize the potential
draft of the chimney and lessen the effects of slow chimney start-
up.
VENTI NG OF A FI REPLACE FI TTED WI TH THE DRAFTHOOD
ADAPTOR:
Note:
Please refer to the chimney manufacturer’s installation
instructions prior to commencing the installation.
This unit may
be vented to an existing masonry chimney, or where no masonry
chimney is available, an approved “B-vent” chimney, or any other
approved constructed chimney/vent system (see Figure 46). In
either case, the fireplace must be connected to the chimney/vent
using a 4” (10 cm) single wall flexible venting.
When an existing masonry chimney is utilized for the venting, it is
required the drafthood be connected to an approved 4” (10 cm)
diameter flexible flue liner running the full height of the chimney.
In many jurisdictions this flue liner may be mandatory. A minimum
of 6” (15 cm) must be maintained between the venting and any
combustibles when using 4” (10 cm) single wall flexible venting.
Venting Restrictions:
The vent lengths below are measured
from the floor to the top of the flex venting and cannot run in the
horizontal dimension other than passing through a wall thimble
into existing masonary.
-
Minimum: 10 ft (3.05m)
- Maximum: 30 ft (9.14m)
SPI LLAGE TEST:
A spillage test must be performed prior to leaving the installed
fireplace with the customer. Perform this test in the following
manner:
1. Close all windows and doors in the room.
2. Start all exhaust fans in the house and the furnace blower.
3. Light the fireplace and set to maximum flame adjustment.
4. After a minimum of 10 minutes operation, test the chimney draft
with a smoke match at the top row of the pattern to confirm that
there is adequate draft or ‘pull’ at the openings around the body
of the Drafthood Adaptor, as shown in Figure 47.
Initial Installation
36
